EXPERIMENTAL INVESTIGATION OF THE IMPULSE IMPACT OF THE MEMBRANE ON THE BOUNDARY LAYER OF THE SWEPT WING

Simulation of hydrodynamic perturbations in the boundary layer of the swept wing model by means of vibrations of a localized surface area and investigation of disturbances development under conditions of low turbulence of the incoming flow were carried out in the subsonic wind tunnel. The results of research are obtained using the method of anemometry. It is found that the pulsed action of a portion of the surface on the boundary layer leads to the generation of perturbations-a longitudinal localized structure and wave packets near its fronts. The effect of the secondary flow and the pressure gradient on the development of simulated perturbations is studied in detail.

Keywords:
streaky structures, wave packets, laminar-turbulent transition, swept wing.
УДК 532.526.3

EXPERIMENTAL INVESTIGATION OF THE IMPULSE IMPACT OF THE MEMBRANEON THE BOUNDARY LAYER OF THE SWEPT WING